| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide clinoptilolite excellent in nitrogen adsorption character. <P>SOLUTION: The clinoptilolite is Ca- or Mg-exchanged clinoptilolite characterized in that a maximum amount of equilibrium adsorption of nitrogen at 25°C and 0-5,500 mmHg is ≥30 NmL/g. It is particularly preferable that Ca or Mg exists at 40-80% of the ion exchange sites. The clinoptilolite can be used as an adsorbent which adsorbs nitrogen. <P>COPYRIGHT: (C)2012,JPO&INPIT |
